Card Recording Time
Find how many minutes of video fit on a memory card at a given bitrate.
About Card Recording Time
A card's megabits divided by the video bitrate gives the seconds, and dividing by 60 yields the recordable minutes. Knowing recording time before a session avoids a card filling mid-clip and informs how many cards are needed for a shoot.
Formula
Card Recording Time
Time = cards GB x 8192 / bitrate, then to minutes or hours
- bitrate
- Data rate in megabits per second
Worked example
With the default values below, Card Recording Time returns Recording Time of 728. Change any input above and every figure here is recalculated in your browser.
Inputs used
- Card capacityminimum 1
- 64
- Video bitrateminimum 0.1
- 12
Results
- Recording Time
- 728 min
- Recording Time (hours)
- 12.14
- Data per Hour
- 5.27 GB
Step by step
- 1Values used
- 2Card Recording Time
- 3Recording Time= 728 min
- 4Recording Time (hours)= 12.14
- 5Data per Hour= 5.27 GB
Assumptions and limits
- The result is derived only from the 2 inputs listed above. Anything not among them is not part of the calculation.
- In particular, this calculator does not take inflation, tax, fees or charges or compounding frequency into account.
- Figures are rounded for display to 2 decimal places, so totals built from several rounded parts can differ slightly from the unrounded arithmetic.
How these calculators are built and tested is described on the Methodology page. If a figure looks wrong, please report it.
Frequently Asked Questions
How is Card Recording Time calculated?
Time = cards GB x 8192 / bitrate, then to minutes or hours A card's megabits divided by the video bitrate gives the seconds, and dividing by 60 yields the recordable minutes.
Why does Card Recording Time matter?
Knowing recording time before a session avoids a card filling mid-clip and informs how many cards are needed for a shoot.
What values do I need to enter?
This calculator takes 2 inputs: Card capacity, Video bitrate. The pre-filled defaults are a realistic starting point — replace them with figures from your own environment for a result you can act on.